75021110221231 has 2 divisors, whose sum is σ = 75021110221232. Its totient is φ = 75021110221230.

The previous prime is 75021110221193. The next prime is 75021110221357. The reversal of 75021110221231 is 13212201112057.

It is a weak prime.

It is an emirp because it is prime and its reverse (13212201112057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75021110221231 - 2³⁵ = 74986750482863 is a prime.

It is a super-2 number, since 2×75021110221231² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75021110221231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75021110201231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37510555110615 + 37510555110616.

It is an arithmetic number, because the mean of its divisors is an integer number (37510555110616).

Almost surely, 2^{75021110221231} is an apocalyptic number.

75021110221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

75021110221231 is an equidigital number, since it uses as much as digits as its factorization.

75021110221231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 28.

Adding to 75021110221231 its reverse (13212201112057), we get a palindrome (88233311333288).

The spelling of 75021110221231 in words is "seventy-five trillion, twenty-one billion, one hundred ten million, two hundred twenty-one thousand, two hundred thirty-one".